I'm failing to see the nuance of your opinion, I mostly see very basic statements interlaced with a few strawmen, like at: And I don’t need angry letters to know that women are often shamed for expressing that boundary, especially when it doesn’t align with the “everything must be 50/50 at all times” script.
Everyone, men or women, should be looking for a partner, be it a man or a woman, with aligned values and compatible viewpoint. That's kind of broader definition of partnership.
I don't see feminists in everyday life promoting the everything 50:50. I'm sure you'll find someone somewhere online saying so, but that doesn't mean much, and it might come from men as well.
Feminism is about a choice - some women have strong wish to be a long term homemaker - and, while it is a valid wish, it naturally limits the pool of potential partners to those who are willing and capable of supporting that dream. By definition there is a limited supply of men earning over average wage.
Some women identify different value Nr 1 priority for themselves - when I went for the IT school, I saw one advantage of my future higher wage in being able to select the most inspiring partner for myself no matter of his earnings potential. Potentially a free thinker who wouldn't burden me or himself with romantised version of gender roles and would tackle the life challenges with open mind with me
How I see it, the homemaking role is a myth which never really existed, maybe outside of 50s USA and some specific privileged classes.
Through the whole history women worked, thought not always in paid job. In more agricultural times, the "farmer's wife role" was actively providing - being responsible for all poultry, milk processing, food conservation, managing the helpers, herbs, vegetable garden, everyday health of everyone, managing food for the whole group, not only her family.
Some women were "manning" their booths at markets, some did less physical trades, some worked with herbs and health, the women worked. Talking about men as biology-based providers is a patriarchy's crap undervaluing the providing done by all the historical women.